Area Code 423-210 located in TELLICO PLAINS, MONROE, TN, more detail is as below. Place NPA (Numbering Plan Area) : 423 NXX (Local Number Prefix) : 210 City : TELLICO PLAINS County : MONROE State : TN (Tennessee) NXX Use Type : Wireless NXX Intro Version : 1998-08-14 FIPS (Federal Information Processing Standards) : 47123 LATA (Local Access Transport Area) : 474 Rate Center : TELLICO PL ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 37385 Other Information NPANXX : 423210 County Population : 0 Switch CLLI (Common Language Location Identifier) : KNVLTNMA31Z Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : UNITED STATES CELLULAR CORP. - TENNESSEE OCN (Operating Company Number) : 6278 Coverage Area Name : TELLICO PLAINS Latitude : 35.3603 Longitude : -84.3032 ‹ previous : 423-209 next › : 423-212 Telephone Number List 423-210-0000 ~ 423-210-9999